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HD110301-1 Rev2

Page 1 of 23

Fire Sprinkler Freeze Protection

Design / Install Guide

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Summary of Contents for HeatTracer

Page 1: ...HD110301 1 Rev2 Page 1 of 23 Fire Sprinkler Freeze Protection Design Install Guide...

Page 2: ...m Freeze Protection Design Guide Page 11 STEP 1 Collect the Required Information for Each Line Page 11 STEP 2 Design Considerations Page 12 STEP 3 Electrical Requirements Page 13 STEP 4 Selecting Cabl...

Page 3: ...ot cover the following applications Hazardous locations as defined in the National Canadian Electric Code Supply voltages other than 100 130V or 208 277V For assistance with application requirements t...

Page 4: ...cal energy is efficiently used while providing the required reliable freeze protection A correctly designed and specified system will comprise the following Heating cable correctly selected for the li...

Page 5: ...n water temperature at a minimum of 40 F 4 C to prevent fire suppression piping from freezing Fire Suppression System Freeze Protection Applications A typical freeze protection system includes the hea...

Page 6: ...ground general water piping given the following conditions are met Heating cable is permanently secured to insulated metal pipes using TAPE GCR HT glass tape or to plastic pipes using TAPE AL aluminum...

Page 7: ...racer connection kits Heating cable is protected from the pipe to the power connection box in CSA certified water sealed conduit with a minimum diameter of suitable for the location The system is cont...

Page 8: ...dpipe up to and including 20 diameter is used UL listed fiberglass or closed cell flame retardant insulation with weatherproof cladding is used The system is controlled by a Controller with integrated...

Page 9: ...using TAPE AL aluminum tape Temperature controller alarm contacts must be connected to the fire control panel The system is controlled by a Controller with integrated ground fault protection with alar...

Page 10: ...PE GCR HT glass tape or to plastic pipes using TAPE AL aluminum tape The system is controlled by a Controller with integrated ground fault protection with alarm contacts connected to a fire control pa...

Page 11: ...rature at which the cable will normally become energized not necessarily the coldest temperature Metal or non metallic Pipe Some materials have superior heat transfer compared to others For example me...

Page 12: ...more electrical power over time and is not required with a correctly designed system A lower wattage cable has a longer circuit length On projects with long runs this reduces the number of circuits th...

Page 13: ...level as per the National and Canadian Electrical Codes This protection is provided in Drexan s recommended Controllers STEP 4 SELECTING CABLE POWER OUTPUT When determining the minimum ambient tempera...

Page 14: ...2 5 2 0 1 6 1 4 1 3 1 1 20 29 4 9 3 0 2 3 1 9 1 7 1 6 1 3 40 40 6 4 3 9 3 0 2 5 2 2 2 0 1 8 1 0 18 3 7 2 2 1 7 1 4 1 3 1 1 1 0 10 23 4 5 2 7 2 1 1 8 1 5 1 4 1 2 20 29 5 4 3 3 2 5 2 0 1 8 1 7 1 4 40 4...

Page 15: ...29 30 0 16 0 11 0 9 0 7 0 6 1 5 0 40 40 39 0 21 0 15 0 11 3 9 3 8 0 6 4 14 0 18 22 0 12 0 8 0 6 3 5 2 5 0 4 0 10 23 27 2 15 0 10 0 8 0 7 0 6 0 4 4 20 29 33 0 17 3 12 0 9 3 8 0 7 0 5 2 40 40 43 0 23 0...

Page 16: ...tion and 1 foot for the end termination Table 2 HEAT LOSS ADDERS CABLE PER FOOT Pipe Hardware Types Pipe Size Inches Flange Per Pair Vent Drain Pipe Support Globe Ball Butterfly Gate Valve 0 3 1 1 1 1...

Page 17: ...n connect up to three heaters to power or be used as an inline splice no power or inline tee no power AMIGA consists of a pipe mounted stanchion and an enclosure junction box with terminal blocks moun...

Page 18: ...nels are desired contact Drexan HeatTracer for design and delivery Single circuit control Heating cable circuits that do not exceed the current rating of the selected Controllers can be switched direc...

Page 19: ...sfer An additional layer of foil tape fastening the cable to the pipe also assists in the heat transfer and can prevent the cable from being embedded in the insulation Do not cut the cable until it is...

Page 20: ...HD110301 1 Rev2 Page 20 of 23 FIG 7...

Page 21: ...n can prevent additional labor costs Minimum readings of 20 Megohms for each circuit is an acceptable level to test for A record should be kept of the reading after the cable has been installed This r...

Page 22: ...____ Tested By ___________________________ Date Witnessed By ________________________ Date Readings after Installation Insulation Resistance M Ohms ______________________________________ Tested By ___...

Page 23: ...ir Zero power output Low or no input voltage Repair electrical supply Connections not properly made Repair connections Pipe is at elevated temperature Check pipe temperature and recalculate the output...

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